46295 + Interview Questions in Chemistry

1.	Three faraday of electricity is passed through three electrolytic cells connected in series containing Ag+,Ca2+ and Al3+ ions respectively. The molar ratio in which the three metal ions are liberated at the electrodes is:
Answer» Three faraday of electricity is passed through three electrolytic cells connected in series containing $A g^{+}, C a^{2 +}$ and $A l^{3 +}$ ions respectively. The molar ratio in which the three metal ions are liberated at the electrodes is:

Discussion

2.	Which of the following amines cannot be prepared by Gabriel Synthesis?
Answer» Which of the following amines cannot be prepared by Gabriel Synthesis?

Discussion

3.	Alums are not formed by which alkali metal?
Answer» Alums are not formed by which alkali metal?

Discussion

4.	Calculate the percent dissociation of H2S(g) if 0.1 mol of H2S is kept in a 0.4 litre vessel at 1000 K. For the reaction, 2H2S(g)⇌2H2(g)+S2(g) the value of Kc is 1×10−6.
Answer» Calculate the percent dissociation of $H_{2} S (g)$ if 0.1 mol of $H_{2} S$ is kept in a 0.4 litre vessel at 1000 K. For the reaction, $2 H_{2} S (g) ⇌ 2 H_{2} (g) + S_{2} (g)$ the value of $K_{c}$ is $1 \times 10^{- 6}$ .

Discussion

5.	The most common oxidation state of an element is -2. The number of electrons present in its outermost shell is:
Answer» The most common oxidation state of an element is -2. The number of electrons present in its outermost shell is:

Discussion

6.	For which element of first transition series the oxidation potential value (M→M2++2e−) is lowest
Answer» For which element of first transition series the oxidation potential value $(M \to M^{2 +} + 2 e^{-})$ is lowest

Discussion

7.	In which of the given diagrams is Aufbau rule and Hund's rule both violated?
Answer» In which of the given diagrams is Aufbau rule and Hund's rule both violated?

Discussion

8.	Enzymes with two sites are called [AIIMS 2002]
Answer» Enzymes with two sites are called [AIIMS 2002]

Discussion

9.	pKa value of the compound decreases when ′X′ is:
Answer» $p K a$ value of the compound decreases when $^{'} X^{'}$ is:

Discussion

10.	The compound of vanadium has magnetic momentum of 1.73BM. The vanadium chloride has the formula
Answer» The compound of vanadium has magnetic momentum of 1.73BM. The vanadium chloride has the formula

Discussion

11.	Which of the following does not illustrate the anomalous properties of lithium
Answer» Which of the following does not illustrate the anomalous properties of lithium

Discussion

12.	In the electrolytic refining of Copper (electrolyte is CuSO4 solution + dil H2SO4 ;Pure Cu cathode and Impure Cu anode), metallic impurities having lower oxidation potential than Cu are deposited as __ sludge.
Answer» In the electrolytic refining of Copper (electrolyte is $C u S O_{4}$ solution + dil $H_{2} S O_{4}$ _;Pure Cu cathode and Impure Cu anode), metallic impurities having lower oxidation potential than Cu are deposited as __ sludge.

Discussion

13.	Buffer capacity of a buffer solution is x, the volume of 1M NaOH added to 100 mL of this solution if we change the pH by 1 is
Answer» Buffer capacity of a buffer solution is $x$ , the volume of $1 M N a O H$ added to $100 m L$ of this solution if we change the pH by 1 is

Discussion

14.	Q1)Which carbon halogen bond is stronger Q2)IUPAC name of CH2=(double bond)CH-Rr
Answer» Q1)Which carbon halogen bond is stronger Q2)IUPAC name of CH2=(double bond)CH-Rr

14.

Q1)Which carbon halogen bond is stronger Q2)IUPAC name of CH2=(double bond)CH-Rr

Answer»

Q1)Which carbon halogen bond is stronger

Q2)IUPAC name of CH2=(double bond)CH-Rr

Discussion

15.	As per Pauling, the radius of an isoelectronic ion in a given crystal is inversely proportional to the effective nuclear charge, Z∗. Z∗=Z−σ; where σ represents the screening constant. The crystal structure of NaF is shown as below : The radius of F− in pm is (130+x) . The value of x in nearest possible integer is
Answer» As per Pauling, the radius of an isoelectronic ion in a given crystal is inversely proportional to the effective nuclear charge, $Z^{}$ . $Z^{} = Z - σ$ ; where $σ$ represents the screening constant. The crystal structure of $NaF$ is shown as below : The radius of $F^{-}$ in pm is $(130 + x)$ . The value of $x$ in nearest possible integer is

Discussion

16.	Stability of the species Li2, Li2− and Li2+ increases in the order of
Answer» Stability of the species $L i_{2}$ , ${L i_{2}}^{-}$ and ${L i_{2}}^{+}$ increases in the order of

Discussion

17.	Match the vitamins given in Column I with the deficiency disease they cause given in Column II. Column IColumn II(Vitamins)(Diseases)A. Vitamin A1. Pernicious anaemiaB. Vitamin B12. Increased blood clotting timeC. Vitamin B123. XerophthalmiaD. Vitamin C4. RicketsE. Vitamin D5. Muscular weaknessF. Vitamin E6. Night blindnessG. Vitamin K7. Beri−beri8. Bleeding gums9. Osteomalacia
Answer» Match the vitamins given in Column I with the deficiency disease they cause given in Column II. $\begin{matrix} C o l u m n I & C o l u m n I I (V i t a m i n s) & (D i s e a s e s) A . V i t a m i n A & 1. P e r n i c i o u s a n a e m i a B . V i t a m i n B_{1} & 2. I n c r e a s e d b l o o d c l o t t i n g t i m e C . V i t a m i n B_{12} & 3. X e r o p h t h a l m i a D . V i t a m i n C & 4. R i c k e t s E . V i t a m i n D & 5. M u s c u l a r w e a k n e s s F . V i t a m i n E & 6. N i g h t b l i n d n e s s G . V i t a m i n K & 7. B e r i - b e r i 8. B l e e d i n g g u m s 9. O s t e o m a l a c i a \end{matrix}$

Discussion

18.	To a 30 mL H2O2 solution, excess of acidified solution of KI was added. The iodine liberated required 20 mL of 0.3 N Na2S2O3. Calculate the volume stregnth of H2O2 solution.
Answer» To a $30 m L H_{2} O_{2}$ solution, excess of acidified solution of $K I$ was added. The iodine liberated required $20 m L$ of $0.3 N N a_{2} S_{2} O_{3} .$ Calculate the volume stregnth of $H_{2} O_{2}$ solution.

Discussion

19.	In a given shell, the order of screening effect is:
Answer» In a given shell, the order of screening effect is:

Discussion

20.	In an isobaric process, the ratio of heat supplied to the system (dQ) and work done by the system (dW) for diatomic gas is
Answer» In an isobaric process, the ratio of heat supplied to the system (dQ) and work done by the system (dW) for diatomic gas is

Discussion

21.	Two moles of ideal monoatomic gas was taken through isochoric heating from 100 K to 800 K. If the process is carried out irreversibly (one step) then ΔSsystem + ΔSsurrounding is [Given : ln 2 = 0.7 and R = 2 cal/mol K]
Answer» Two moles of ideal monoatomic gas was taken through isochoric heating from 100 K to 800 K. If the process is carried out irreversibly (one step) then $Δ S_{s y s t e m} + Δ S_{s u r r o u n d i n g}$ is [Given : $l n 2 = 0.7$ and $R = 2 c a l / m o l K$ ]

21.

Two moles of ideal monoatomic gas was taken through isochoric heating from 100 K to 800 K. If the process is carried out irreversibly (one step) then ΔSsystem + ΔSsurrounding is [Given : ln 2 = 0.7 and R = 2 cal/mol K]

Answer»

Two moles of ideal monoatomic gas was taken through isochoric heating from 100 K to 800 K. If the process is carried out irreversibly (one step) then $Δ S_{s y s t e m} + Δ S_{s u r r o u n d i n g}$ is

[Given : $l n 2 = 0.7$ and $R = 2 c a l / m o l K$ ]

Discussion

22.	What is the full form of AVSEPR theory as per discussed in the video?
Answer» What is the full form of AVSEPR theory as per discussed in the video?

Discussion

23.	What is ligand?
Answer» What is ligand?

Discussion

24.	Which of the following radial distribution graphs corresponds to l = 2 for H atom for the least value of n for which l = 2 is allowed?
Answer» Which of the following radial distribution graphs corresponds to l = 2 for H atom for the least value of n for which l = 2 is allowed?

Discussion

25.	Does discharging always happen at cathode?
Answer» Does discharging always happen at cathode?

Discussion

26.	How to determine n factor of compounds like SO2 AND SO3??
Answer» How to determine n factor of compounds like SO2 AND SO3??

Discussion

27.	What happens when chlorobenzine is subjected to hydrolysis?
Answer» What happens when chlorobenzine is subjected to hydrolysis?

Discussion

28.	Q. If there is 0.1M of AgNO3 and 0.01M of NaCl is there in a container separated by a semi permeable membrane. Will precipitate form ?if not , why ?
Answer» Q. If there is 0.1M of AgNO3 and 0.01M of NaCl is there in a container separated by a semi permeable membrane. Will precipitate form ?if not , why ?

Discussion

29.	If H2 + O2 = H2O . So, while proving the law of conservation of mass Why we take O2 as 1/2 O2 ?
Answer» If H₂+ O₂= H₂O . So, while proving the law of conservation of mass Why we take O₂as 1/2 O₂?

Discussion

30.	Select the meaning of the given phrases/idioms: To pick holes.
Answer» Select the meaning of the given phrases/idioms: To pick holes.

Discussion

31.	Under the same reaction conditions, initial concentration of 1.386 mol dm−3 of a substance becomes half in 40 s amd 20 s through first order and zero order kinetics respectively. Ratio (k1k0) of the rate constants for first order (k1) and zero order (k0) of the reaction is:
Answer» Under the same reaction conditions, initial concentration of 1.386 $m o l d m^{- 3}$ of a substance becomes half in 40 s amd 20 s through first order and zero order kinetics respectively. Ratio $(\frac{k_{1}}{k_{0}})$ of the rate constants for first order $(k_{1})$ and zero order $(k_{0})$ of the reaction is:

Discussion

32.	Velocity of efflux flowing through an orifice at height h below the free surface of liquid is given by
Answer» Velocity of efflux flowing through an orifice at height h below the free surface of liquid is given by

Discussion

33.	Reaction of Zn(OH)2 with NaOH produces
Answer» Reaction of $Z n (O H)_{2}$ with $N a O H$ produces

Discussion

34.	In acetylene molecule (HC ≡ CH) the carbon atoms are:
Answer» In acetylene molecule (HC ≡ CH) the carbon atoms are:

Discussion

35.	Which of the following has the maximum resonance energy?
Answer» Which of the following has the maximum resonance energy?

Discussion

36.	The radioactive decay, 83Bi211→ 81Tl207, takes place in 10 L closed container at 0∘C. Half - life of 83Bi211 is 2.15 min. Starting with 1 mole of 83Bi211, the pressure developed in the container after 4.30 min. will be
Answer» The radioactive decay, $_{83} B i^{211} \to_{81} T l^{207},$ takes place in 10 L closed container at $0^{\circ} C .$ Half - life of $_{83} B i^{211}$ is 2.15 min. Starting with 1 mole of $_{83} B i^{211}$ , the pressure developed in the container after 4.30 min. will be

Discussion

37.	The standard reaction, Gibbs energy for the electrochemical reaction. Cr2O2−7+6Fe2++14H+→2Cr3++6Fe3++7H2O is −793 kJmol−1 The standard cell potential is:
Answer» The standard reaction, Gibbs energy for the electrochemical reaction. $C r_{2} O_{7}^{2 -} + 6 F e^{2 +} + 14 H^{+} \to 2 C r^{3 +} + 6 F e^{3 +} + 7 H_{2} O i s - 793 k J m o l^{- 1}$ The standard cell potential is:

Discussion

38.	The percentage of p-character in the orbitals forming p – p bonds in P4 is
Answer» The percentage of p-character in the orbitals forming p – p bonds in $P_{4}$ is

Discussion

39.	The product of the following reaction is :
Answer» The product of the following reaction is :

Discussion

40.	In comparison with alkali metals, the electron affinity of halogens is
Answer» In comparison with alkali metals, the electron affinity of halogens is

Discussion

41.	The concentration of a reactant changes from .03M to .02M in 25 minutes. The average rate of reaction, using time in seconds is
Answer» The concentration of a reactant changes from .03M to .02M in 25 minutes. The average rate of reaction, using time in seconds is

Discussion

42.	Solvay’s process in used for the manufacture of
Answer» Solvay’s process in used for the manufacture of

Discussion

43.	Among the following compounds: I) Phenol II) Methylphenol III) m-nitrophenol IV) p-nitrophenol The acidity order is:
Answer» Among the following compounds: I) Phenol II) Methylphenol III) m-nitrophenol IV) p-nitrophenol The acidity order is:

43.

Among the following compounds: I) Phenol II) Methylphenol III) m-nitrophenol IV) p-nitrophenol The acidity order is:

Answer»

Among the following compounds:

I) Phenol II) Methylphenol III) m-nitrophenol IV) p-nitrophenol

The acidity order is:

Discussion

44.	Wood charcoal is used to decolourise sugar because it [CPMT 2002]
Answer» Wood charcoal is used to decolourise sugar because it [CPMT 2002]

44.

Wood charcoal is used to decolourise sugar because it [CPMT 2002]

Answer»

Wood charcoal is used to decolourise sugar because it

[CPMT 2002]

Discussion

45.	1 g of dry green algae absorbs 4.7×10−3 mol of CO2 per hour by photosynthesis. If the fixed carbon atom are stored as starch (C6H10O5)n, how long would it take for the algae to double their own weight assuming photosyntheseis takes place at constant rate? Give the answer to nearest integer.
Answer» 1 g of dry green algae absorbs $4.7 \times 10^{- 3}$ mol of $C O_{2}$ per hour by photosynthesis. If the fixed carbon atom are stored as starch ( $C_{6} H_{10} O_{5})_{n}$ , how long would it take for the algae to double their own weight assuming photosyntheseis takes place at constant rate? Give the answer to nearest integer.

Discussion

46.	IP1 and IP2 of Mg are 178 and 348 Kcal mol−1. The energy required for the reaction Mg→Mg2++2e− is
Answer» $I P_{1}$ and $I P_{2}$ of $M g$ are 178 and 348 Kcal mol $^{- 1}$ . The energy required for the reaction $M g \to M g^{2 +} + 2 e^{-}$ is

Discussion

47.	The atmospheric pressure at zero elevation is given as 1.01325×105 N/m2. What is the pressure at an elevation of 3 km? Given, molecular weight of air =28 g/mol and temperature of air is constant at 300 K. Also, acceleration due to gravity, g=10 m/s2.
Answer» The atmospheric pressure at zero elevation is given as $1.01325 \times 10^{5} {N/m}^{2}$ . What is the pressure at an elevation of $3 km$ ? Given, molecular weight of air $= 28 g/mol$ and temperature of air is constant at $300 K$ . Also, acceleration due to gravity, $g = 10 {m/s}^{2}$ .

Discussion

48.	For a zero order reaction will the molecularity be equal to zero? Explain.
Answer» For a zero order reaction will the molecularity be equal to zero? Explain.

Discussion

49.	Which of the following group(s) show +M effect?
Answer» Which of the following group(s) show $+ M$ effect?

Discussion

50.	The covalency of sulphur in sulphuric acid (H2SO4) is:
Answer» The covalency of sulphur in sulphuric acid $(H_{2} S O_{4})$ is:

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Three faraday of electricity is passed through three electrolytic cells connected in series containing Ag+,Ca2+ and Al3+ ions respectively. The molar ratio in which the three metal ions are liberated at the electrodes is:

Which of the following amines cannot be prepared by Gabriel Synthesis?

Alums are not formed by which alkali metal?

Calculate the percent dissociation of H2S(g) if 0.1 mol of H2S is kept in a 0.4 litre vessel at 1000 K. For the reaction, 2H2S(g)⇌2H2(g)+S2(g) the value of Kc is 1×10−6.

The most common oxidation state of an element is -2. The number of electrons present in its outermost shell is:

For which element of first transition series the oxidation potential value (M→M2++2e−) is lowest

In which of the given diagrams is Aufbau rule and Hund's rule both violated?

Enzymes with two sites are called [AIIMS 2002]

pKa value of the compound decreases when ′X′ is:

The compound of vanadium has magnetic momentum of 1.73BM. The vanadium chloride has the formula

Which of the following does not illustrate the anomalous properties of lithium

In the electrolytic refining of Copper (electrolyte is CuSO4 solution + dil H2SO4 ;Pure Cu cathode and Impure Cu anode), metallic impurities having lower oxidation potential than Cu are deposited as __ sludge.

Buffer capacity of a buffer solution is x, the volume of 1M NaOH added to 100 mL of this solution if we change the pH by 1 is

Q1)Which carbon halogen bond is stronger Q2)IUPAC name of CH2=(double bond)CH-Rr

Stability of the species Li2, Li2− and Li2+ increases in the order of

To a 30 mL H2O2 solution, excess of acidified solution of KI was added. The iodine liberated required 20 mL of 0.3 N Na2S2O3. Calculate the volume stregnth of H2O2 solution.

In a given shell, the order of screening effect is:

In an isobaric process, the ratio of heat supplied to the system (dQ) and work done by the system (dW) for diatomic gas is

Two moles of ideal monoatomic gas was taken through isochoric heating from 100 K to 800 K. If the process is carried out irreversibly (one step) then ΔSsystem + ΔSsurrounding is [Given : ln 2 = 0.7 and R = 2 cal/mol K]

What is the full form of AVSEPR theory as per discussed in the video?

What is ligand?

Which of the following radial distribution graphs corresponds to l = 2 for H atom for the least value of n for which l = 2 is allowed?

Does discharging always happen at cathode?

How to determine n factor of compounds like SO2 AND SO3??

What happens when chlorobenzine is subjected to hydrolysis?

Q. If there is 0.1M of AgNO3 and 0.01M of NaCl is there in a container separated by a semi permeable membrane. Will precipitate form ?if not , why ?

If H2 + O2 = H2O . So, while proving the law of conservation of mass Why we take O2 as 1/2 O2 ?

Select the meaning of the given phrases/idioms: To pick holes.

Under the same reaction conditions, initial concentration of 1.386 mol dm−3 of a substance becomes half in 40 s amd 20 s through first order and zero order kinetics respectively. Ratio (k1k0) of the rate constants for first order (k1) and zero order (k0) of the reaction is:

Velocity of efflux flowing through an orifice at height h below the free surface of liquid is given by

Reaction of Zn(OH)2 with NaOH produces

In acetylene molecule (HC ≡ CH) the carbon atoms are:

Which of the following has the maximum resonance energy?

The radioactive decay, 83Bi211→ 81Tl207, takes place in 10 L closed container at 0∘C. Half - life of 83Bi211 is 2.15 min. Starting with 1 mole of 83Bi211, the pressure developed in the container after 4.30 min. will be

The standard reaction, Gibbs energy for the electrochemical reaction. Cr2O2−7+6Fe2++14H+→2Cr3++6Fe3++7H2O is −793 kJmol−1 The standard cell potential is:

The percentage of p-character in the orbitals forming p – p bonds in P4 is

The product of the following reaction is :

In comparison with alkali metals, the electron affinity of halogens is

The concentration of a reactant changes from .03M to .02M in 25 minutes. The average rate of reaction, using time in seconds is

Solvay’s process in used for the manufacture of

Among the following compounds: I) Phenol II) Methylphenol III) m-nitrophenol IV) p-nitrophenol The acidity order is:

Wood charcoal is used to decolourise sugar because it [CPMT 2002]

1 g of dry green algae absorbs 4.7×10−3 mol of CO2 per hour by photosynthesis. If the fixed carbon atom are stored as starch (C6H10O5)n, how long would it take for the algae to double their own weight assuming photosyntheseis takes place at constant rate? Give the answer to nearest integer.

IP1 and IP2 of Mg are 178 and 348 Kcal mol−1. The energy required for the reaction Mg→Mg2++2e− is

The atmospheric pressure at zero elevation is given as 1.01325×105 N/m2. What is the pressure at an elevation of 3 km? Given, molecular weight of air =28 g/mol and temperature of air is constant at 300 K. Also, acceleration due to gravity, g=10 m/s2.

For a zero order reaction will the molecularity be equal to zero? Explain.

Which of the following group(s) show +M effect?

The covalency of sulphur in sulphuric acid (H2SO4) is: